Rib-knitting machine.



L. N. D. WILLIAMS.

BIB KNITTING MACHINE.

APPLICATION man IUNE 19, 1913.

1,163,%95. I Patented Dec. 7, 1915.

I 3 SHEET$-SHEET I.

EIIII-IIIIII WITNESSES LOUIS N. D.

WILLIAMS BY HIS ATTORN INVE NTOR- L. N. D. WILLIAMS.

RIB KNITTING MACHINE.

APPLICATION man JUNE 19. 1913.

1,163,295. Patented Dec. 7, 1915.

3 SHEETSSHEET 2- WITNESSES INVENTOR M, Z 5 28 Lows N. o WILLIAMS J W BY ms ATTOENEY mfm J 1 L. N. D. WILLIAMS.

RIB KNITTING MACHINE.

APPLICATION FILED suns 19, 1913.

1 163 295, N Patented Dec. 7, 1915.

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I as y j F/- WITNESSES I 68 INVENTOR Lows N. 0. WILLIA %Mr BY Has ATORN LOUIS N. .D. WILLIAMS, or ocoNrz, PENNSYLVANIA.

RIB-KNITTING MACHINE.- 1

' Specification of Letters latent.

Patented Dec .7, 1915.

Application filed June 19, 1913. Serial No. 774,592.

To all whom it may concern:

Be it known that I, LoUIsN. D.- WILLIAMS, a citizen of the United States, residing in Ogontz, Pennsylvania, have invented certain Improvements in Rib-Knitting Machines, of

p which the following is a, specification.

My invention relates to that type of knitting machines in whichjare employed two needle carriers at'an angle to one another,

such, for instance, as the vertical needle. cylinder and horizontal needle dial of an ordinary rib knitting machine. In such machines, the knitted web, in its passage from the needles to the take-up mechanism, usu-- ally passes between dogs which retain the cylinder and dial in their proper circumferential relation and, with dogs of the ordinary construction, much difliculty is experienced in inserting the web between the dogs in the first instance, while the jabbing of the fabric on the needles preparatory to a resumption of knitting, in the case of a press off, causes an increase 'of bulk in the web which, when it passes between fixedly mounted dogs, has the effect of throwing the needle carriers out of proper registry and prevents the normal operation of the machine at that time. In carrying out my invention, therefore, I so .mount the dogs that one or either of them can be moved away from the other, thereby providing, between the dogs, a space of such size that the knitted web can be readily passed between the dogs,

the latter being then permitted to approach.

one another in order to assume their normal or operative relation.

In the accompanying drawings-Figure 1 is a view, partly in plan or top view and partly in horizontal section, of one form of dogging device constructed in accordance,

with my invention; Fig. 2 is a transverse section of the same on the line wa, F g. 1; Fig. 3 is a detached view of the cylinder dog; Fig. 4 is a view similar to part of Fig.v

2 but illustrating another type of locking device for the cylinder dog;-Fig. 5 is a section on the line 5-6, Fig. 4:; Fig. 6 is a face view of another portionof the device; Fig. 7 is a view similar to Fig. '1. but illustrating a cylinder dog diiferent from that 7 shown in the latter figure; Fig. 8 is a View,

partly in elevation and partly in transverse section, on I the line 0-0, Fig. 7; Fig. 9 is a transverse section illustrating a modified form of adjusting device for the dog carried by the dial of the machine; Fig; 10 is a View,

partly in elevation and partly in section, on the line d-d, Fig. 9; Fig. 11 is a section on the line ee, Fig. 9, showing in elevation part of one of'the elements of said adjusting device; Fig. 12 is a view similar to Fig. 2, but illustrating a modified 'form of pivotal mounting for the cylinder dog; Fig. 13 is a transverse section on the line ff, Fig. 12, and Fig. 14 is a view illustrating a'further modification.

In the various figures of the drawing, 1 represents part of the needle cylinder of a .knitting machine and 2 part of the dial of the-same, these members of the machine being either fixedly or rotatably mounted in their supporting structures, depending upon whether the cam carriers of the machine are rotatable or fixed. In i order to preserve these members of the machine in proper circumferential relation to one another they are provided with dogs of which the cylinder dog is represented at 3 in Figs. 1 and 2 and the dial dog at 4 in said figures. The web of fabric produced upon the machine has to pass between these dogs in its passagefrom the needles to the take-up mechanism and much difiiculty is often experienced in introducing the forward portion of the web between the dogs, the latter being adjusted so that theiradjoining surfaces are nearly in contact with one another, only suliicient .space being left between them tocompensate them andI have provided various means in" connection. with such adjustable mountings for locking the dogs in their proper normal relation to one another after the knitted fabric has been introduced between them.

In the construction shown in Figs. 1 and 2 the cylinder dog 3 has a pivot stem 5 with enlarged head 6 at its lower end, said pivot stem and its head being pivotally mounted in a bearing in a boss 7 secured to the inner face of the cylinder 1, so that the dog 3 can swing rearwardly on its pivot stem 5 in theabsence of any means for preventing it from duced portionof the head is thus presented the dog will be allowed to swing rearwardly to the extent of such reduction. At the lower endof the locking bolt 8 is an arm 10 provided with a spring-actuated bolt llewhich is adapted to engage with one. or'other of a pair of notches formed in the under face of the boss 7 so as to retain the locking bolt in either of its two positions of adjustment.

The dial dog 4, by preference, consists of a roller which is rotatably mounted by means of a ball bearing or other anti-frictional device upon one end of a lever 12, the latter being pivoted,-by means of a depending stud 13, to the underside ofthe dial and having, adjacent to its other end, an opening for the passage of a screw stem 14 whose threaded portion is adapted to a threaded opening in a stud 15, also depending from the underside of the dial, alock nut, set screw,or other available means being employed for reventing said screw stem 14 from turning after it has been properly adjusted. Loosely mounted. on the screw stem 14 are a pair of washers 16 one bearing against the stud 15 and the other against the lever 12,

and between these washers is'interposed a coiled spring 17 whose tendency is to move the lever 12 in the direction of the arrow :12, Fig. 1, and thus separate the dog 4 fromthe dog 3. At one end of the screw stem 14, however, is a head 18 and between the latter and the face of the lever 12 is interposed a washer 19, which has a cam face 20 cooperating with a similar cam configuration on the face of the lever. When, therefore, thewasher 19 is adjusted so that the high portions of its face are in register with the low portions of the cam face on the lever the latter will move under the influence of the spring 17 so as to separate the dog 4 from the cylinder dog 3 to an extent determined by the configuration of the cam faces of the lever' and washer, but when the washer 19 is turned so as to cause the high portions of its cam to register with the high portions of the lever cam face, said lever will be adjusted so as to bring its dog 4 into normal operative relationwith the dog 3 and will lock it in said position.

Figs. 4, 5 and 6 illustrate a modified construction of locking bolt for the cylinder dog 3. In this modification the lockingbolt 8 is mounted so as to slide vertically in the boss 7 and when said bolt is fully raised it contacts with the rear face of the dog and locks the latter in its normal position. The

forked at its lower end and this forked portion is provided with a transverse pin 22 which also passes through a camslot 23 in a disk 24 contained in a forked extension of the boss 7 and mounted so as to turn upon a pin 25 crossing said forked extension, as shown in Fig. 5, the disk 24 having a suitable handle 24 whereby it can be easily manipulated.

'In the modified structure shown in Figs. 7 and 8 the dog 3 has a pivot stem 5 extending through the boss 7 from top to bottom of the same and having at its lower end an arm 10 with spring-pressed locking bolt 11, similar to the corresponding parts employed in connection with the locking bolt 8 in the structure shown in Fig. 2. In this case the dog 3 can be swung into either normal or separated relation to the dog 4 by manipulating said dog 3 through the medium of its pivot stem 5".

In the modification shown in Figs. 9, 10

and 11 the cylinder 1 has a fixed dog 3 projecting from the inner face of the same interposed between the face of the lever 12 and the inner face of the head 18 on the screw stem 14, as shown in. Fig. 10 will force the inner arm of the lever 12 rearwardly'and bring its dog 4 into proper operative relation with the fixed dog 3 on the cylinder, and will lock it in such position. When, however, the outer end of the lever 26 is moved so as to withdraw its camface from between the lever 12 and the head 18 said inner arm of the lever 12 will move forwardly so as to separate its dog 4 from the adjacent face of the cylinder dog 3*. In order to provide for the simultaneous locklng or release of a series of dog-carrying levels 12, when the dial is provided there with, I provide, on the underside of the dial, a ring 28 provided Witha series of dependmg cams 29 one for each' of the levers 12, these cams being adapted to act upon rollers 30 rotatably mounted upon the levers 26. The ring 28'is provided with stud bolts 31 projecting upwardly therefrom through suitable segmental slots 32 in the dial 2 and simultaneously upon the rollers 30 of all of the levers 26, or so as to free said rollers from the influence of said cams, provision being thereby afi'orded for adjustingall of the dogs 4 simultaneously in respect to the cylinder dogs 3. When the ring 28 is adjusted so as to free all of the rollers 30 from the influence of the cams 29 the levers 26 i i may be manipulated independently so as to adjust either of the dogs 4 independently of the others. By rotating the ring 28 in respect to a stationary-dial, or by holding said ring stationary when the dial rotates, each of the dial dogs may be separated from its coiiperating cylinder dog, on each rotation of the machine, if desired, and provision thus afiordedior-the tension mechanism to shown one method of thus mounting the cylinder dog, the latter having near the top an outwardly projectlng pivot stud 35 free to turn in a suitable bearing in the cylinder.

and having a projecting arm 36 which can play in a recess 1n said cylinder, as shown in ig. 13, said arm 36 being acted upon by a vertical rod 37 contained in an opening 1I1 the cylinder and acted upon at its lower end by a cam lever 38 so that it can be projected, as shown in Fig. 12, in order to raise the arm 36 and hold the dog 3 in operative position,'or can be lowered so as to release said arm 36 and permit the lower portion of the dog 3 to swing away from the dial dog. When there are a series of similar dogs and a corresponding series of rods 37 the cams 38 may be mounted upon .a ring so as to operate all of said rods 37 simultaneously, if desired.

In Fig. 13 I have illustrated a cylinder dog having a pivot stud 35 at its lower end, the upper portion of the dog in this case being moved from and toward the dial dog. The movement of the dog may be effected by devices similar to those shown in connection with the dog illustrated in Figs. 12 and 13.

I'claim: i

'1. The combination, in a knitting machine, of two angularly disposed needle carriers, dogs for determining the proper relaerating in conjunction with one of said dogs and having a cam head, which, when in one position, locks the dog in normal operative relation to the other, and, when in the other position, permits abnormal separation of the dogs, and means for operating said bolt so as to bring either portion of. its. cam head into operative relation with the dog.

. 3. The combination, in a knitting machine, of two angularly disposed needle carriers, dogs for determining the proper relation of one of said needle carriers to the other, said dogs being so disposed that the knitted web passes between them, a lever carrying one of said dogs, a spring acting upon said lever and serving to retain its dog in one position in respect to the coiiperating dog, and a cam device for acting upon said lever so as to carry its dog into another relation with the cooperating dog.

4. The combination, in; a knitting machine, of two angularly disposed needle carriers, dogs for determinlng the proper relation of one of said needle carriers .to the other, said dogs being so disposed that the knitted web passes between them, a lever carrying one of said dogs, a screw stem passing through said lever and adapted to a stud on the needle carrier, a spring acting on the lever, a head on said screw .stem, and

a cam washer, interposed between said bolt and the lever, and serving, by its adjustment, to change the position of the latter.

- 5. The combination, in a knitting machine, of two angularly disposed needle carriers, dogs for determining the proper relation of one of said needlecarriers to the other, said dogs being so disposed that the knitted web passes between them, devices for moving a dog of one carrier toward or from a dog of the other carrier, means for eiiecting independent operation of each of a series of such devices, and means for effecting simultaneous operation of such se-" r1es.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing vwitnesses.

LOUIS N. D. WILLIAMS.

Witnesses:

KATE A. BEADLE, HAMILTON D. TURNER. 

